Require explicit selection of traits for LazyInstance

chrome/browser/media_galleries/fileapi/mtp_device_map_service.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MTP_DEVICE_MAP_SERVICE_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MTP_DEVICE_MAP_SERVICE_H_
 
 #include <map>
 
 #include "base/files/file_path.h"
@@ skipping 22 matching lines @@
   void RegisterMTPFileSystem(const base::FilePath::StringType& device_location,
                              const std::string& filesystem_id,
                              const bool read_only);
 
   // Removes the MTP entry associated with the given
   // |device_location|. Signals the MTPDeviceMapService to destroy the
   // delegate if there are no more uses of it.
   void RevokeMTPFileSystem(const std::string& filesystem_id);
 
  private:
-  friend struct base::DefaultLazyInstanceTraits<MTPDeviceMapService>;
+  friend struct base::LazyInstanceTraitsBase<MTPDeviceMapService>;
 
   // Adds the MTP device delegate to the map service. |device_location|
   // specifies the mount location of the MTP device.
   // Called on the IO thread.
   void AddAsyncDelegate(const base::FilePath::StringType& device_location,
                         const bool read_only,
                         MTPDeviceAsyncDelegate* delegate);
 
   // Removes the MTP device delegate from the map service. |device_location|
   // specifies the mount location of the MTP device.
@@ skipping 29 matching lines @@
   AsyncDelegateMap async_delegate_map_;
 
   MTPDeviceFileSystemMap mtp_device_map_;
 
   MTPDeviceUsageMap mtp_device_usage_map_;
 
   DISALLOW_COPY_AND_ASSIGN(MTPDeviceMapService);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MTP_DEVICE_MAP_SERVICE_H_